Re: xterm rlwrap sbcl

Eli the Bearded <*@eli.users.panix.com> writes:

In comp.unix.questions, Salvador Mirzo  <smirzo@example.com> wrote:

I know next to nothing about terminals.  My .profile says TERM=xterm.
 
$ echo $TERM
xterm
 
I really am running PuTTY on Windows and logging in to a FreeBSD system.

>
It sounds to me like the terminal definition (terminfo or termcap as
appropriate to FreeBSD) disagrees with the terminal implementation
(Putty here). This is a not uncommon thing to happen.
>
I would first see if there are Putty preferences that fix this.

My trial-and-error was to set local echo to ``force off'' and local line
editing to ``force off'':

  https://prnt.sc/e6SedO_IiHTX

No difference.  (I also set the terminal-type string to vt100.)

I just installed the terminal Alacritty.  I see the same behavior on it:

$ echo $TERM
xterm-256color

$ uname -a
FreeBSD my.domain 14.1-RELEASE-p5 FreeBSD 14.1-RELEASE-p5 GENERIC amd64

$ rlwrap sbcl
This is SBCL 2.4.9, an implementation of ANSI Common Lisp.
More information about SBCL is available at <http://www.sbcl.org/>.

SBCL is free software, provided as is, with absolutely no warranty.
It is mostly in the public domain; some portions are provided under
BSD-style licenses.  See the CREDITS and COPYING files in the
distribution for more information.
* (f(format t "hello~%")
hello
NIL
*

Second see if it could be fixed with an intermediary that grabs terminal
output from the shell programs and rewrites before it gets to Putty.
Tools like tmux or screen will do that.
>
Third I'd try to fix the terminal definition. Using script to capture
the output of the terminal programs with all terminal escape codes
intact, I'd examine that output to look for cause of the bad formatting
and then search the terminal definition (terminfo or termcap) for the
terminal "capability" that causes the issue and fix or remove it.
>
Most capabilities are "nice to haves" instead of "required" so just
removing them doesn't break things. But editing those definitions is
not for the faint of heart. That's why the intermediary programs
rewriting things "works".

That's more technical than I could do right now on my own.  If you have
the energy describe what it is that I must do in more details---what
software to use et cetera---I will do it.  Thanks!